Hybridizes with : Stinking Tutsan (Hypericum hircinum) to produce Tall Tutsan (Hypericum inodorum), which despite the scientific name, does smell when crushed, but not of billy goat, rather of aromatic compounds.

Tutsan only smells slightly aromatic when the leaves are crushed.

The name 'Tutsan' is derived from 'Toutesaine' meaning 'all healthy'. In the 1600's it was used to treat sciatica, gout, wounds and, probably with less success, cholera.

Although Tutsan itself is half evergreen, Stinking Tutsan is deciduous.

It is native to the UK throughout the West and South of the British Isles but frequently naturalised outside its native range. It grows amongst deciduous woods in damp conditions, in hedge banks and in grykes in limestone pavements.